Update: I tried it twice. Both times it failed. There were times between the beeps were I swore it was gone, but when I took off the headset (or muted the volume), it was indeed still there. Perhaps you have to continuously do it?
Hi. In original post I wrote I had ringing for a weekend. It was in fact a week. I used it 1-3 times a day. Mostly while getting to sleep or walking, I could lower the volume more and more until I slept.
The ringing was totally gone in between the tones but as you know it's really a short span.
You say you're used it twice and it failed, I don't think you can conclude that. You can read section 2.5 in the paper. Here it mentions treatment of 4-6 hours a day not split into sections shorter than an hour and over ~12 weeks.
If you fall asleep with some earphone in maybe that also counts the time?
Then it's easier to get such a high number therapy. E.g. one walk session a day for 1 hour. And then 3 hours at night until you wake up groggily and take of the earpieces and continue sleeping.
